Caillard, T2026-03-222026-03-221986https://andeanlibrary.org/handle/123456789/9295Abstract. Eleven enzyme systems were used to compare 2 cryptic species previously treated as Psychodopygus carrerai. Two enzyme systems were each completely diagnostic. Three other loci gave evidence of reproductive isolation: the combined ge notypic frequencies departed from Hardy-Weinberg equilibri um and the allele frequencies were different. The genetic dis tance between the 2 species is relatively small, suggesting that they are closely related.enMÉTODOS DE ISOENZIMASESPECIES CRÍPTICASPSYCHODOPYGUS CARRERAIYUCUMENSISArticle